ʿAbd Allāh b. Muslīm b. ʿAqīl b. Abī Ṭalib (a) (Arabic: عبدالله بن مُسلِم بن عَقيل بن أَبي طالب) is one of the martyrs of Karbala and, according to a report, the first martyr of Banu Hashim (Hashemites) on the Day of 'Ashura'.

Abu l-Faraj al-Isfahani (d. 356/967) writes: "Muslim b. 'Aqil had no children; but many historians mentioned that he had sons and some of them mentioned a daughter for him, while there are many disagreements about their life, age and the way of martyrdom."

In Karbala

Al-Khwarazmi narrated in Maqtal al-Husayn (a) that when all of the companions of Imam al-Husayn (a) were martyred and no one except for his family, i.e. descends of 'Ali, Ja'far, 'Aqil, Al-Hasan (a) and his own, had remained they gathered around and bid farewell to each other. Then the first person who went to battle field for fighting was 'Abd 'Allah b. Muslim.

Al-Tabari in his history book narrated from Humayd b. Muslim al-Azdi, and also al-Shaykh al-Mufid in al-Irshad, that 'Amr b. Subayh al-Sada'i shot him by an arrow which sewed his hand to his forehead, then he was attacked and martyred. 'Amr b. Subayh fired an arrow towards him. He wanted to protect his face by his hand; but the arrow sewed his hand to his forehead and he could not move his hand. Then another arrow hit him on his heart.

Al-Tabari said that he was martyred by Usayd b. Malik al-Hadrami. In another place he said that he was martyred by Zayd b. Ruqad, who was later killed by al-Mukhtar's order.

Qadi Nu'man al-Maghribi (d. 363/973-4) writes that Muslim had a son named 'Abd Allah, whose mother was Ruqayya, Imam Ali's daughter. According to Qadi Nu'man, 'Abd Allah b. Muslim was martyred in Karbala by 'Amr b. Subayh. He adds that some has reported that he was martyred by Asad b. Malik.

Al-Shaykh al-Tusi, also, mentioned him among the companions of Imam al-Husayn (a) and said that his mother was Ruqayya, Imam Ali's daughter.

Al-Baladhuri talked about a young named 'Abd Allah b. Muslim b. 'Aqil b. Abi Talib whom Zayd b. Ruqad al-Janbi shot on forehead and heart and martyred. In another account, al-Baladhuri said that 'Amr b. Subayh al-Saydawi shot 'Abd Allah by an arrow, then he was attacked and martyred.